Title:
振動機器、特に電動歯ブラシの共振周波数及び/又は振幅を決定するためのシステム及び方法
Document Type and Number:
Japanese Patent JP4283219
Kind Code:
B2
Abstract:
A system and corresponding method for determining the frequency and/or amplitude of an oscillating apparatus, which includes a driving assembly having a stator portion and an armature portion, and a driving signal circuit which supplies a driving signal to the stator portion. A control circuit interrupts the drive signal momentarily, for at least a quarter of a cycle, at periodic intervals, resulting in a signal being induced into the stator coil from continuing movement of the armature. A measurement/read circuit is connected to the stator coil for determining one or both of the frequency of the induced signal and the amplitude of the induced signal. The frequency or amplitude information is then compared against pre-established values and any differences are used to change the driving signal so as to provide maximum performance of the appliance.
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Inventors:
Grez Joseph W
Stainke Kurt Ei
Stainke Kurt Ei
Application Number:
JP2004515152A
Publication Date:
June 24, 2009
Filing Date:
June 10, 2003
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
A46B17/08; B06B1/04; A61C17/22; A61C17/34; H02P25/02; H02P29/00; A61C17/20
Domestic Patent References:
| JP2001128487A |
Foreign References:
| WO2002046847A1 |
Attorney, Agent or Firm:
Susumu Tsugaru
Akihiko Miyazaki
Fueda Shusen
Akihiko Miyazaki
Fueda Shusen